unblock port 25

[Nagarjuna Rao Cherukuri]

Hi,

My sendmail is up and running fine. I am able to send mails using sendmail. Still, my nmap output is not showing me port 25. I tried bouncing sendmail also. No help.

Could it be a bug?

thanks
nagarjuna

-----Original Message-----
From: Manuel Arostegui Ramirez [mailto:manuel at todo-linux.com]
Sent: Wednesday, October 26, 2005 11:32 PM
To: General Red Hat Linux discussion list; Nagarjuna Rao Cherukuri
Subject: Re: unblock port 25

El Miércoles 26 Octubre 2005 19:55, Nagarjuna Rao Cherukuri escribió:
> Hi,
>
>
>
> Can anyone tell me how to enable port 25 in my server? I am able to ping
> to this port as local host, but it is failing when try to ping using
> DNS.
>
>
>
> [root at hydlmuk lib]# telnet localhost 25
>
> Trying 127.0.0.1...
>
> Connected to localhost.localdomain (127.0.0.1).
>
> Escape character is '^]'.
>
> 220 hydlmuk.ad.infosys.com ESMTP Sendmail 8.11.6/8.11.6; Wed, 26 Oct
> 2005 23:15:11 +0530
>
> quit
>
> 221 2.0.0 hydlmuk.ad.infosys.com closing connection
>
> Connection closed by foreign host.
>
> You have new mail in /var/spool/mail/root
>
>
>
> [root at hydlmuk lib]# hostname
>
> hydlmuk
>
> [root at hydlmuk lib]# telnet hydlmuk 25
>
> Trying 172.25.125.203...
>
> telnet: Unable to connect to remote host: Connection refused
>


For some strange reason, your sendmail went down.
Did you look at logs?



>
>
> My nmap output is as follows.
>
>
>
> [root at hydlmuk lib]# nmap hydlmuk
>
>
>
> Starting nmap V. 2.54BETA22 ( www.insecure.org/nmap/ )
>
> Interesting ports on hydlmuk.ad.infosys.com (172.25.125.203):
>
> (The 1528 ports scanned but not shown below are in state: closed)
>
> Port       State       Service
>
> 21/tcp     open        ftp
>
> 22/tcp     open        ssh
>
> 23/tcp     open        telnet
>
> 110/tcp    open        pop-3
>
> 111/tcp    open        sunrpc
>
> 143/tcp    open        imap2
>
> 1521/tcp   open        ncube-lm
>
> 5010/tcp   open        telelpathstart
>
> 5680/tcp   open        canna
>
> 6000/tcp   open        X11
>
> 22273/tcp  open        wnn6
>
> 22289/tcp  open        wnn6_Cn
>
> 22305/tcp  open        wnn6_Kr
>
> 22321/tcp  open        wnn6_Tw
>
>
>
> can anyone tell me how to resolve this issue?


Try to run sendmail and run nmap again
What's the output?



--
Manuel Arostegui Ramirez #Linux Registered User 295750
Socio de Hispalinux 1813
Red Hat Linux 9, Kernel 2.6.2 ReiserFS
Firma  cifrada
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org
iD8DBQE+3O1MqfmPcHTj+twRAm
yDAJ9P6ezepIMg06vOet/YPKxVoB+Z/ACfWVhh
---END PGP SIGNATURE-----

**************** CAUTION - Disclaimer *****************
This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system.
***INFOSYS******** End of Disclaimer ********INFOSYS***